US1498348A - Internal-combustion engine - Google Patents

Description

lune A17 5.924,

E. R BUR'TNETT INTERNAL COMBUSTION ENGINE 2 Sheevts-Sheet l 4 Liga.

Filed July 29'. 1922 E. R. BURTNETT INTERNAL COMBUSTION ENGINE June 17 1924.

Filed July 29, i932 2 Shees5heet 2 Patented June 17, 1924.

EVERETT R. BURTN-ETT, OF LOS ANGELES, CALIFORNIA, ASSIGNOR O'F ONEHALF TO ,i

CHARLES A. BURTNETT, OF LOS ANGELES, CALIFORNIA.

INTERNAL-COMBUSTION ENGINE.

application fuea July 29, 1922, serial No. 57s,2s4.

vTo allfwlzvomz'tmay concern:

Be 1t known that I, Evnnnr'r R. BURT- NETT, a citizen of the United States, residing at Los Angeles, in the county of Los 5 Angeles and Stateof California, have invented new and useful Improvements in Internal-Combustion Engines, of which the 4following isa specification.

My invention relates generally to internal combustion engines and more particularly to an engine of the sleeve valve type, the

principal object of my invention being t combine with the engine, simple and effi-v cient valve means for controlling the admission of inert air or cooled burnt products of combustion, and gaseous fuel into the combustion chamber of the engine and which inert air and gaseous fuel, together with the relatively small volume of products of combustion remaining in the combustion chamber at the terminationjof the previous exhaust stroke of the piston, are disposed in stratified relation, With the charge of gaseous fuel occupying a pocket that is formed rin the :underside of the cylinder head of the engine.

Further objects of my invention are t0 provide the cylinder head of the engine With a combined stratification and combustion pocket, the 'same having communication with a gaseous fuel and air inlet chamber through registering ports that are formed in the sleeves within the cylinder, to provide in the underside of the cylinder head a deflectA ing outlet port for the burnt products of combustion that discharge from the combusrtion chamber during the exhaust stroke of ghe piston and to provide for the ignition'of the compressed combustible charge within the stratification pocket.

Further objects of my mvention are to 'provide a rotary valve manifold, that operates in harmony with the inlet port means of the sleeves for controlling the admission of gaseous fuel and non-combustible charge Volume to the combustion chamber lof the engine, to associate with the rotary valve, a sleeve that cooperates with said valve in controlling the admission of gaseous fuel oand inert charges to the combustion chaniber, and which sleeve is adj ustable 'in order to accurately -control the variation of the ratio of inert volume and fuel. mixture admitted to the cylinder during the suction or induction stroke of the piston andconsequently producing an engine having the desirable attributes of constant volume and constant compression. y

.With the foregoing and other objects in View, my. invention consists in certain novel features of constructionand arrangement of parts, that will be hereinafter more fully described and claimed and illustrated in the accompanying drawings in which:

Fig. 1 is an .end 'elevational view of an engine of my improved construction. Fig. 2 is a Vertical section taken through the center of one of the cylinders of the 'engine l Fig. 3 is a horizontal section taken on the line 3-3of Fig. 2.

Figzc Ais a cross section on the line 1f-4 of Fig. 3.

Fig. 5 is a cross section on the vline 5-*5 of Fig. 3. Referring by numerals to the accompanying drawings 10 and 11 designate respectively the upper and lower parts of a crank case, the end Walls of vthe upper part being formed with suitable bearings fora crank shaft l2.

A crank shaft 13 is journalled in suitable. l

bearings in the upper portion 10 of the crank case, said crank shaft being for the puropse of driving the rotary-and sleeve valves of 'the engine. This crank shaft is driven di- -rectly'from shaft 12 by suitable gear connections l-t'and'- the latter being arranged so as to drive said shaft 13 at half the speed of shaft 12.

Surmounting the upper part of the crank case is a cylinder block v15. having one or more piston chambers 16, the upper portions thereof constituting combustion chambers.

The wall of the block l5 surrounding each chamber 16 is provided 'with a chamber 17 through which is adapted to circulate aliuid cooling mediuln'such as water.

Secured to the top of cylinder block 15 and closing the upper end ofchaniber 16 is a head 1 8 having Va depending cylindrical portion 19 that `projects a substantial' disy tance downwardly into the chamber 16. The

pending nien'iher l?) is n pocket 2lg lhe open lower end thereof eoinnnnnenting with elnnnhor lo :ind die upper poriion of Suid 'poeliel has eonnnnnienlion with die, :annular spore il() by inerinrs oi :in inlel' port 22 thai; yenri'es slightly npwnrds 'l'roni its outer l'on'nrds ile inner end.`

The heed lb :ind depending no1-lion 19 :ire formed with :L recess or depression 33, and arranged Lherein und sented in the wall lieiween the iioloin thereol und the pocket 2l is n spark plug 2l. v'lhe terminals of the electrodes of his plugi nrev arranged in the upper iortion of fhe chamber 21.

Formed in lhe onter lziee of he de i'iending portion l) of ilse head, at (he lower end thereof and. dimnetrieally opposite to the port 22 is a short vertically disposed exhaust pori; or nissngeney 2:3.) the upper end of which is a direct horizontal alignment, with an. exhaus port 2G that is formed lirough the wall o cylinder l5.,

ilie'onyer end nl' the inlelv port Q2 is in direci horizontal alignment wih exhaust port :T56 the Lipper end ol port und also Wii'h a por 21' al', *die upper end of :in nirrunte inlet rhnsnher 23 ihn. is l'orined in the well of cylinder l5. The rendite rhnniher coninnn'iieeies wih the elnnnher within :L hori-V zontally disposed cylindrical easing 2S und elle lner being formed integral `\\'i;h eylnder Arranged for reeiproeetorjy' movement within Chamber 1G and hearing' directly e against the inner ieee of the eylilnler l5 ir;

en open ended sleeve S0 dint performs hey nnoions of e. valve v und 'lornied in sind sleeve .is n'por 3L that is adopted lao register with ports 27 and 22 :is the sleeve is recinroealed.

Formed in `the opposite side of sleeve Ho ond in :i plane slightly oelow that oeennied by pori 3l is n port 33 that is adapted to coincide with pors and 526 :is seid sleeve is reeiprooated. i

firrnged for reriproontory movement within sleeve Bl) is a second sleeve Valve 3l, elle upper portion of which eneloses the depending porion 19 of heard 18 and {'orined in said sleeve. is n port 35 that is adapted in register with ports 22, 2? end ll. Formed in the opposite of' sleeve 34- 'nnd in the sznne plane with pori; is :i port 3&3 that edapied oregisier with ports 25, 26 and 33', The upper portion. of the sleeve valves 3U und fooeupy the annuler spore Q() between deinendin-g portion 19 of head 1S und the sin ronnding portion o1" cylinder 15 und to provide a, Huid pressure tight vjoint` between the inner sleeve and depending` member l5) snitzdole packing rings 37 nre, sented in he pe ripheiy of seid depending lneniher direetly above erts 522 :ind 25.

Head 18 and depending' portion if) are provided with oomninniesting elnnnbergi essie hrmigh whirl; may he eirenlned4 n suitablel i'inid cooling; medium. i

The lower portions oi sleeve il() son neoted by :i pilnmn 39 lo :i eranl' l0 on slnlli lCS, und likewise the lower porion ol" :sleeve 3J: connected by d pitninn lll to n crawl; 42 on said shall` 13, seid ernnl; lf2 heh b an proxin'iaely 90 degrees in advance olz ille ernnlr d Fig. Arranged for reciproczitory Within sleeve 34 is e pision e3 hn is corr neoedin the usuel manner by a jjiitinnn i to crank Shaft 12.

,--irranged for rotary ndjnsiinen within easing S339 is n sieeve l5 provided :it one end with en axially disposed stein 46 and the later extending through a 'nearing that is ori'iied al' the center of o pleite el? that; Closes he end of said eylinder.

Secured zit the. outer end of siem (5 is n crank orio. 48 to Whieh `is eonneered a nien` nelly operable rod 49.

yFormed in sleeve is pori; 50 that is adapted to eoineide with ehmnher Qt. The width oi this port 5()` iesnhstantndly hnlf that ol" the ehznnlier 'and Vi'n lengh .said port und ehainher are substantially eqmd.

The width oi: Chamber Q8 which ronstintes "ehe cylinder inlet port, is3 in degrees,

romry vulve selector i iereinoter more, 'fully described) during one stroke of Ehe piston.

A relzdively large elnnnher helween one tniie vhe distance of Feriplieral l'rerel o'' n end ol valve 53 and he :idjieent end of sleeve is eonsizintly in eonnnnnieeiion with. gaseous fuel inlet non 59 in housing 29. Leading :from this chamber 5S lengthwise through the center of rhe rolnrvf' faire is a duct 6()i the inner end thereof eoinninnieating with the innerendg of o noir o rndially arranged inlet ports (3l. These pores are arranged dieinetrieally opposile lo each other and the width of the outer end of each port equals the width of pori: 5U in sleeve 41.5.

Formed in the central portion of the lood): of valve 53 is e pair of chambers 62, the members thereoic being oppositely disposed with respect to euch other und located 'ne tweeen he ports (il. The ehninhers are adapted to alernotely register with port. no in sleeve -fl by means of ports G3 that-ere. 'ornied in the outer wall of the vulve body sind the width of each port 63 is substanielly equal to the Width of said por 5l).

Chambers 62 have eonnnnniraizion with :i lzrrge chamber 64 in the end of the sleeve, through ports 6 allenare formed in 'lire corresponding' end of the rotary valve end said large ehzmiber receives the inery rolnine ehm-ge rhrough the inlet poi-s 5l und The operation oil my -iniproved engine-is as follows:

A s iilnstreted in. Fig. 2, the, pision is :it its eonlplete Werl-:ingi

lll?

lli

Vhigh center or at the end of its compression stroke. The inletand exhaust ports in the sleeve valves are closed'l7 and a compressed charge yof products ot combustion,A

'the piston and within pocket 21, and with the-parts of said charge in stratified relation.

As the piston passes high center,v a spark is produced between the terminalsof the electrodes of plug 24 thereby ignltmg the gaseous. fuel portion of the charge and the ,force of the expansion resulting from combustion is directed onto piston/43 to move the same downward on its power stroke.

During this action, crank and pitman 39 move sleeve valve 3Q upwardly, and crank 42 and pitman 41 move sleeve valve 34 downwardly so that during the succeeding upward movement or exhaust stroke of the piston, ports 33 and 36 are in register with each other and with port 26 thereby permitting the greater portion of the products of combustion to escape through duct 25 and said ports 36, 33 and 26.

At the end of the exhaust stroke, the ports 33 and 36 pass out of registration with each other and with port 26, and at the beginning of the succeeding or suction stroke of the piston, there remains' within chamber 16 and pocket 21, a relatively small volume of burnt gases or products of combustion.

At the beginning of the suction stroke, in let ports 31 and' are beginning to register with each other and with ports 22 and 27 -and one of the ports 63 inthe rotary valve is beginning to register with inlet lport 50.

.The registration of the ports just mentioned continues during all" or the greater portion of the suct'ion stroke of the piston, depending of course, upon the relative position of port 50 in the manually adjustable sleeve 45, and thus for a predetermined time interval, during the first portion of the down- Ward travel of the piston on its suction stroke` inert air or cooled products of combustion from a. suitable container,l will be drawn through port 52, ports 5l, chamber 64, port 64, chamber 62, ports 63 and 50' into chamber 28 and from thence through ports 27 31, 35 and 22 into pocket 21.

The inert volume thus admitted, drives the burnt gases remaining in pocket 21, before it, downwardly into 'chamber 16, and simultaneously with the passage of port 63 out'ot` registration with port 50, the succeed-- ing port'l61 registers with said port 50 and, during the remainder of the downward travel of the piston, gaseousv fuel will be dra'wnfinto thev pocket 21, through port 59 in casing 29, chamber 58, chamber 60, ports 61 and4 50 into chamber 28 andfrom thence through ports-27, 31 and 22.

The charge of gaseous fuel thus drawn into pocket 21 will drive before it, the volunie of inertair that lies above the volume of burnt products of combustion and on the.

succeeding upward stroke of the piston, the

entire volume within the piston clearance chamber and pocket 2l will be compressedv in the upper portion of chamber 16 and said pocket, with a strata of burnt products of combustion immediately adjacent to the. Vhead of the piston. a strata of inert au' or cooled products of combustion above said strata of burnt products of combustion and with a strata ot' gaseous fuel in the upper portion of pocket 21.

Rotary adjustment of sleeve 53 enables ports 61 and 63 to 'register with port 50 at any desired point throughout the length ot the chamber 28 and in the desired and proper time relation to the travel of the piston within the cylinder, as well as in harmony with the registration of the inlet ports ot the sleeve valves.

Thus my improved construction provides simple and elilcient means ior throttling the engine by controlling, as desired, the variation of the ratio ot volume of the gaseous charge last admitted to the cylinder, to the volume of the first admitted inert charge and the construction being such that both volumes enter the same inlet port with one voldecided economy in operation.

Obviously the details of construction of my improved engine may be varied slightly without departing from the spirit of my invention, the scope of which is set forth in the appended claims.

I claim as my invention:

1. The combination with aninteinal combustion engine having sleeve valves that are provided with `inlet and exhaust ports, ot a rotary valve selector and a sleeve enclosing the same, said rotary valve and sleeve having co-operating ports that are adapted to co-operate Withthe inlet portsl in the sleeve for controlling the admission of `inert air and gaseous fpel into the combustion chamber of the engine.

2. The combination with an internal combustion engine having sleeve valves that are provided with inlet andexhaust ports, ofv l 'a rotary valve selectorand sleeve enclosing edn'iissien eens '.uell

3. The eeinbinetion with an interna com inistion engine having :in inlet pnrt, of a, rfintiveiy ndjustzibie nien'ii'ier having :L 'port Hutt .is adapted to register with said .inlet port and :L rotary *fi-tive :arranged for 0peration with saliti rotary member und having inert wiiiunxe ehm-ge and gaseeue fuel iniet perfs im :ire zulaptwi te register with the port in said' rotntiveiy adjustabie member.

L The Cmnbinetion with an internal conibust/ien engine haring an iniet port, of a n'ieiniier having e pore that is adapted to register with said inlet port, n rotary Valve arranged for operation within said member end inning inert volume charge and gaseous fusi inlet ports that are adapted to register *with die pert in said member and ineens for :ijnsting said member :L10 as t0 vary the ndniissien ei? the inert` voiunie und gaseous fnei charge?, te iie inlet pert in the engine eyiinfier.,

periedieities of said air and gas- In an'internel eenibustion engine having an inlet port, 'and adjustable sleeve and a, rotary valve having (zo-operating ports that are adapted te register with seici inlet port for the admission of inert charge volume and gaseous fuel charges into the combustion chamber within the engine cylinder and the Width of seid. inlet opening being twice the degrees nii peripherai movement of the rotary valve during one Working stroke of the-piston of the engine.

6. In an internal combustion engine han# ing en inlet port7 an edjustebe sleeve helving a port that is adapted te register Withsaid inlet port, enci a rotary veive Within seid sleeve, which Valve is provided with pairs et inert volume and gaseous fue' iniet 'ports that ere adapted to register with the port in said sleeve.

11i-testimony whereof here signed my naine to this specification.

EVERETT R. BURTNTT.

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